Today, we have analysed the Razer Hydra a bit deeper.
Now, we know that the transmitter emits pulses in series, 3 pulses of 4ms long followed by a pause of 4ms.
This gives a refresh rate of 60Hz for the position.
For the coils, they use an alternative currant around 18kHz.
And I have started to reverse engineer the receiver : schematic.
This analysis will help use realize our first working prototype.